Clean Z. Fossil Cleaning-Party Emporium is a building in Fossil Fighters: Champions that is found near the exit to the Fossil Lawn in Ribular Town on Ribular Island. There, the player can go to clean Fossil Rocks with other players. Giant Fossil Rocks are recommended to be cleaned here. When two or more players clean fossils at the Emporium, each player gets a copy of the cleaned fossil regardless of whether it is a Giant Fossil Rock or a regular Fossil Rock. It should be noted that this does not work if they are using download play.